Get Started

Get Started

These guides demonstrate how to get started quickly with Hazelcast IMDG and Hazelcast Jet.

Hazelcast IMDG

Learn how to store and retrieve data from a distributed key-value store using Hazelcast IMDG. In this guide you’ll learn how to:

  • Create a cluster of 3 members.
  • Start Hazelcast Management Center
  • Add data to the cluster using a sample client in the language of your choice
  • Add and remove some cluster members to demonstrate data balancing capabilities of Hazelcast

Hazelcast Jet

Learn how to build a distributed data processing pipeline in Java using Hazelcast Jet. In this guide you’ll learn how to:

  • Install Hazelcast Jet and form a cluster on your computer
  • Build a simple pipeline that receives a stream of data, does some calculations and outputs some results
  • Submit the pipeline as a job to the cluster and observe the results
  • Scale the cluster up and down while the job is still running

Hazelcast Engineering Blog

At Hazelcast we build open-source software for building distributed systems and data-intensive applications. Here we share some of the stuff we are currently building and anything else that we find interesting.


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Hazelcast Jet 4.4 is Released!

Marko Topolnik
by Marko Topolnik | February 03, 2021

Today we’re releasing Hazelcast Jet 4.4 and we have some exciting new features! Jet SQL Hazelcast Jet 4.4 brings you the first beta version of our SQL interface. You can now log into Jet from the command line and issue queries against the data sources you specify. They can be both data at rest (batch sources) […]

Getting More from Your Mainframe by Integrating In-Memory Computing

by Rahul Gupta | February 02, 2021

In the modern era of digital transformation, mainframe systems continue to stand out against the backdrop of the constantly changing ecosystem of global enterprise IT. More and more industries such as banking, retail, telecommunications, and healthcare rely on mainframe computing to manage processing of large volumes of data to serve thousands of users at any […]

A Hitchhiker’s Guide to Caching Patterns

Nicolas Frankel
by Nicolas Frankel | December 07, 2020

When your application starts slowing down, the reason is probably a bottleneck somewhere in the execution chain. Sometimes, this bottleneck is due to a bug. Sometimes, somebody didn’t set up the optimal configuration. And sometimes, the process of fetching the data is the bottleneck. One option would be to change your whole architecture. Before moving […]

Announcing Hazelcast Cloud CLI

Huseyin Babal
by Huseyin Babal | December 01, 2020

We are happy to announce Hazelcast Cloud CLI (hzcloud) to provide full automation for your Hazelcast clusters and related operations. We all believe in the power of automation and if you already have Hazelcast within your pipeline, you can insert the missing piece by using hzcloud. To try examples here, you can create a Hazelcast […]

Build Your Kubernetes Operator with the Right Tool

Rafal Leszko
by Rafal Leszko | November 23, 2020

You want to build a Kubernetes Operator for your software. Which tool to choose from? Operator SDK with Helm, Ansible, or Go? Or maybe start from scratch with Python, Java, or any other programming language? In this blog post, I discuss different approaches to writing Kubernetes Operators and list each solution’s pros and cons. All […]

Announcing the Hazelcast Heroes Program

Nicolas Frankel
by Nicolas Frankel | November 19, 2020

Hazelcast is built on open source foundations. It’s part of our DNA, and we strive to uphold open source values in our day-to-day work. This commitment allows external contributors to make Hazelcast better so that the whole community can benefit from a collective effort. No contribution is too small, but, indeed, some of our community […]

Our Journey to a High-Performance Node.js Library

by Andrey Pechkurov | November 10, 2020

As you may already know, the Hazelcast In-Memory Data Grid (IMDG) ecosystem includes a variety of clients for different languages and runtimes, which includes Node.js client library as a part of that list. You can use Hazelcast clients in various cases, including, but not limited to the following: Building a multi-layer cache for your applications […]

Hazelcast IMDG 4.1 GA is Released!

Jiri Holusa
by Jiri Holusa | November 04, 2020

We are excited to announce the production-ready release of Hazelcast IMDG 4.1. Below, we highlight the most notable features and enhancements implemented in this release. You can find the list of changes in the release notes. Before we dive into the details, we want to share a few numbers: It took exactly 9 months since the […]

Hazelcast Jet 4.3 is Released!

Marko Topolnik
by Marko Topolnik | October 23, 2020

Today we’re releasing Hazelcast Jet 4.3, our fourth release of 2020! We took part in Google Summer of Code that ended just a few weeks ago, and this release already brings a production-ready piece of work by our student, Mohamed Mandouh: distributed in-memory sorting. Mohamed’s primary focus was research into the feasibility of integrating RocksDB […]

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